Here are audio files of me, Grant, teaching Lessons 1 and 2 in my Intro Calculus book. Note that my audio lectures coincide perfectly with recent older editions of my book, too. You don't have to have the current
edition to benefit.
You can buy the complete set of my audio lectures teaching my entire book for $50 + GST. That's less than $1 per hour!
If you are interested, reply to this email, and I will send you a PayPal invoice. You can pay with your PayPal account or with a credit card if you do not use PayPal. Once the invoice is paid, the audio will be delivered straight to your inbox within 24 hours.